There is no clear cut answer.
In a study of close to 83,000 IVF patients published in the journal Fertility and Sterility, it was concluded that there is no one-size-fits-all solution.
IVF experts continue to disagree on the success rates between fresh or frozen embryos. The best technique depends on the patient, specifically how much eggs the patient produces.
Whilst some clinics push towards embryo freezing, the study undertaken by Duke Universal Medical Center found that embryo freezing may only be advantageous for women who produce 15 or more eggs after hormone stimulation.
In women who produced 14 eggs or fewer, fresh transfers led to better outcomes.
Read more about this insightful study in this Science Daily article: